994581253 has 2 divisors, whose sum is σ = 994581254. Its totient is φ = 994581252.

The previous prime is 994581233. The next prime is 994581331. The reversal of 994581253 is 352185499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 565345729 + 429235524 = 23777^2 + 20718^2 .

It is a cyclic number.

It is not a de Polignac number, because 994581253 - 2¹⁷ = 994450181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (994581233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497290626 + 497290627.

It is an arithmetic number, because the mean of its divisors is an integer number (497290627).

Almost surely, 2^994581253 is an apocalyptic number.

It is an amenable number.

994581253 is a deficient number, since it is larger than the sum of its proper divisors (1).

994581253 is an equidigital number, since it uses as much as digits as its factorization.

994581253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 46.

The square root of 994581253 is about 31536.9823064922. The cubic root of 994581253 is about 998.1904786073.

The spelling of 994581253 in words is "nine hundred ninety-four million, five hundred eighty-one thousand, two hundred fifty-three".